A. _Matonidium Wiesneri._ (Slightly enlarged.) B. _Marattiopsis marantacea._ (Slightly enlarged.) C. _Gleichenites gracilis._ (Slightly enlarged.) D. _Laccopteris Goepperti._ (Slightly reduced.) E. _L. Muensteri._ (Enlarged.) (A, after Krasser; B, C, after Leuthardt; D, E, after Schenk.)] _Laccopteris polypodioides_ (Brongniart). Figs. 266–268; 278, A. 1828. _Phlebopteris polypodioides_[874], Brongniart, Hist. vég. foss. p. 372, Pl. LXXXIII. fig. 1. — _P. propinqua_, _ibid._ Pls. CXXXII. fig. 1, CXXXIII. fig. 2. 1829. _Pecopteris caespitosa_, Phillips, Geol. Yorks. p. 148, Pl. VIII. fig. 10. — _P. crenifolia_, _ibid._ Pl. VIII. fig. 10. — _P. ligata_, _ibid._ Pl. VIII. fig. 14. [Illustration: FIG. 266. _Laccopteris polypodioides_ (Brongn.). (× 14.) (Brit. Mus.)] In habit this species closely resembles _Matonia_ and _Matonidium_, the long petiole divides distally into several spreading pinnatifid pinnae with linear ultimate segments (fig. 278, A). Circular sori (indusiate?) occur in a single row on each side of the midrib containing 12–14 large sporangia (fig. 266) characterised by an obliquely vertical annulus. The midrib of the pinnules gives off secondary veins at a wide angle and these form a series of elongated meshes parallel to the median rib, as in the recent genus _Woodwardia_; forked and anastomosing branches are given off from these to the edge of the lamina (fig. 267). [Illustration: FIG. 267. Pinnules of _Laccopteris_. (Enlarged.) A, B. From the Inferior Oolite of Yorkshire. C. From the Inferior Oolite of Stamford. (British Museum.)] The specimen shown in fig. 268 is probably a young frond of this species. A very similar, possibly a specifically identical plant, was described by Leckenby from English Jurassic rocks as _Phlebopteris Woodwardi_[875], the distinguishing features of which are the greater number of lateral veins and the smaller sori (fig. 267, A). The name _Microdictyon_ was proposed by Saporta[876] for pinnules differing slightly from those of _Laccopteris_ in venation characters: he included _Laccopteris Woodwardi_ in this genus, but such differences as are recognisable in the venation hardly justify the use of a distinct generic title. Similarly, specimens described by Debey and Ettingshausen[877] from Lower Cretaceous rocks of Aix-la-Chapelle as species of _Carolopteris_ may also be included in _Laccopteris_. [Illustration: FIG. 268. ? _Laccopteris polypodioides._ Nat. size. From a specimen in the Whitby Museum (Brit. Mus.).] _Laccopteris Dunkeri_ (Schenk)[878].